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13 subtracted from a number w is 15.

User Marcone
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W is 15 when 13 has been subtracted from it? So, you need to add back what was subtracted giving you 28. I think that's what you were asking, you weren't all too clear. Hope I helped.
User Gharbad The Weak
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w-13=15|+13
w=15+13
x=28

Answer: w=28
User Arne Deutsch
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